sand blasting
Moderator: martauto
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bodger
- E30 Zone Addict

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- Joined: Tue Aug 07, 2007 11:00 pm
- Location: cheshire
ive got pally with my local sand blaster and he said he will blast some bits for me for just the price of te grit, ive also got some scabby bbs alloys so is it worth blasting them? i will be aerosoling te myself so will this give me a better finish
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GDBN
- E30 Zone Camper

- Posts: 1415
- Joined: Fri Apr 08, 2005 11:00 pm
- Location: Copenhagen
Alloys should be glass blasted, not sand blasted ... as I was told by the guy who straightened my Hartge wheels.
Sand is too harsh for them.
G
Sand is too harsh for them.
G

I deserve 6 of the best ...
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Alex
- Married to the E30 Zone

- Posts: 22665
- Joined: Fri Feb 11, 2005 11:00 pm
- Location: Johannesburg, South Africa
got my cousin to sand blast my bottle tops for free they look good for bottletops




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aceraf
- E30 Zone Addict

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- Joined: Tue Feb 13, 2007 11:00 pm
- Location: Derby
sand-blasting with create lots of 'pin-hole' type inperfections which will take alot more effort prepping if you want a perfect finish.
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Breaking 325i Touring

Breaking 325i Touring
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Ritchie
- E30 Zone Regular

- Posts: 580
- Joined: Thu Feb 03, 2005 11:00 pm
- Location: Aberdeenish
I work for a company that does, amongst about a million other things, blasting and painting.
Sand/grit blasting will be fine as long as a fine grit is used (Olavine) and at a reasonable pressure. If the guy doing it is a muppet and just goes hammering in then you might get problems with surface erosion. If it is an experienced blaster and he works at them slowly it wont be a problem.
Any fine surface roughness will provide a good key for a high build primer which will fill any small imperfections anyway.
Sand/grit blasting will be fine as long as a fine grit is used (Olavine) and at a reasonable pressure. If the guy doing it is a muppet and just goes hammering in then you might get problems with surface erosion. If it is an experienced blaster and he works at them slowly it wont be a problem.
Any fine surface roughness will provide a good key for a high build primer which will fill any small imperfections anyway.

'99 E39 M5
'93 E34 525ix Touring
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Chris
- E30 Zone Camper

- Posts: 1093
- Joined: Thu Apr 07, 2005 11:00 pm
- Location: Clacton, Essex
Would BBS's come up well powder coated?
There is a bloke near me who says he can take the tyres off, blast back to clean bare metal, powder coat and re shoe/re balance for £150 for all five.
I think he is thinking of more gaudy colours but can you powder coat them or would the center caps not fit and generally look crap? Should i just lacquer them after blasting?
There is a bloke near me who says he can take the tyres off, blast back to clean bare metal, powder coat and re shoe/re balance for £150 for all five.
I think he is thinking of more gaudy colours but can you powder coat them or would the center caps not fit and generally look crap? Should i just lacquer them after blasting?

